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Page 309, results 7701 - 7725

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Map, tables, and summary of fossil and isotopic age data, Mount Hayes Quadrangle, eastern Alaska range, Alaska
Warren J. Nokleberg, John N. Aleinikoff, J. Thomas Dutro Jr., Marvin A. Lanphere, Norman J. Silberling, Steven R. Silva, Thomas E. Smith, Donald L. Turner
1992, Miscellaneous Field Studies Map 1996-D
This report describes, summarizes, and interprets all known bedrock fossil and isotopic age studies for the Mount Hayes quadrangle, eastern Alaska Range, Alaska. The accompanying map shows the location of all known bedrock fossil and isotopic sample localities in the quadrangle on a generalized geologic base map. These fossil and...
Hydrologic data for a study of pre-Illinoian glacial till in Linn County, Iowa, water year 1991
P.R. Bowman
1992, Open-File Report 92-500
Hydrologic data for a study of pre-lllinoian glacial till were collected during the 1991 water year at a site in Linn County, east-central Iowa. A hydrologic-data-collection network, consisting of a meteorological station, 22 observation wells, and a water-quality minimonitor, was installed at the site to investigate the hydraulic properties of...
Text and References To Accompany "Map Showing the Thickness and Character of Quaternary Sediments in the Glaciated United States East of the Rocky Mountains"
David R. Soller
1992, Bulletin 1921
A 1:1,000,000-scale map of Quaternary deposits has been compiled for the glaciated area of the United States east of the Rocky Mountains (that is, the area covered by the Laurentide ice sheets). Parts of southern Ontario, areas beneath the Great Lakes, and parts of the submerged eastern seaboard are also...
Mineral resource assessment of the Dillon 1° x 2° quadrangle, Idaho and Montana
Robert Carl Pearson, C. M. Trautwein, E. T. Ruppel, W. F. Hanna, L. C. Rowan, J. S. Loen, B. R. Berger
1992, Circular 1077
The Dillon 1°x2° quadrangle in southwestern Montana and east-central Idaho was investigated as part of the U.S. Geological Survey's Conterminous United States Mineral Assessment Program (CUSMAP) to determine its mineral resource potential. An interdisciplinary study was made of geology, geochemistry, geophysics (gravity and aeromagnetics), remote sensing, and mineral deposits. The...
A geochemical investigation of selected areas in Greenville and Laurens Counties, South Carolina: Implications for mineral resources
John C. Jackson
1992, Miscellaneous Field Studies Map 2205
The purpose of this study is to geochemically evaluate three areas within the Greenville 1° x 2° quadrangle (see index map) that have been shown by previous studies to contain anomalously high amounts of tin. Jackson and Moore (1992) reported the presence of cassiterite (SnO2)-bearing heavy-mineral concentrates from stream sediment...
Cross sections of Lower Ordovician carbonate depositional lithofacies and Mississippi Valley-type zinc-and iron-sulfide mineralization in the Caufield district, east-central part of Harrison 1 degree by 2 degrees Quadrangle, Arkansas and Missouri
Timothy S. Hayes, James R. Palmer, Gary Krizanich
1992, Miscellaneous Field Studies Map 1994-C
As part of the Harrison 1° X 2° CUSMAP study, we examined eight drill cores from the Caulfield district (see index map) in south-central Missouri. This report presents the results of the core study and cross sections and correlation diagrams compiled from the core data (cross sections A-A' and B-B' and...
Hydrogeology of the Cambrian-Ordovician aquifer system in the northern Midwest, United States with a section on ground-water quality
H. L. Young, D. I. Siegel
1992, Professional Paper 1405-B
The Cambrian-Ordovician aquifer system contains the most extensive and continuous aquifers in the northern Midwest of the United States. It is the source of water for many municipalities, industries, and rural water users. Since the beginning of ground-water development from the aquifer system in the late 1800's, hydraulic heads have...